| //===- DWARFListTableTest.cpp ---------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/DebugInfo/DWARF/DWARFListTable.h" |
| #include "llvm/Testing/Support/Error.h" |
| #include "gtest/gtest.h" |
| |
| using namespace llvm; |
| |
| namespace { |
| |
| TEST(DWARFListTableHeader, TruncatedLength) { |
| static const char SecData[] = "\x33\x22\x11"; // Truncated DWARF32 length |
| DWARFDataExtractor Extractor(StringRef(SecData, sizeof(SecData) - 1), |
| /*isLittleEndian=*/true, |
| /*AddrSize=*/4); |
| DWARFListTableHeader Header(/*SectionName=*/".debug_rnglists", |
| /*ListTypeString=*/"range"); |
| uint64_t Offset = 0; |
| EXPECT_THAT_ERROR( |
| Header.extract(Extractor, &Offset), |
| FailedWithMessage( |
| "parsing .debug_rnglists table at offset 0x0: unexpected end of data " |
| "at offset 0x3 while reading [0x0, 0x4)")); |
| // length() is expected to return 0 to indicate that the unit length field |
| // can not be parsed and so we can not, for example, skip the current set |
| // to continue parsing from the next one. |
| EXPECT_EQ(Header.length(), 0u); |
| } |
| |
| TEST(DWARFListTableHeader, TruncatedLengthDWARF64) { |
| static const char SecData[] = |
| "\xff\xff\xff\xff" // DWARF64 mark |
| "\x55\x44\x33\x22\x11"; // Truncated DWARF64 length |
| DWARFDataExtractor Extractor(StringRef(SecData, sizeof(SecData) - 1), |
| /*isLittleEndian=*/true, |
| /*AddrSize=*/4); |
| DWARFListTableHeader Header(/*SectionName=*/".debug_rnglists", |
| /*ListTypeString=*/"range"); |
| uint64_t Offset = 0; |
| EXPECT_THAT_ERROR( |
| Header.extract(Extractor, &Offset), |
| FailedWithMessage( |
| "parsing .debug_rnglists table at offset 0x0: unexpected end of data " |
| "at offset 0x9 while reading [0x4, 0xc)")); |
| // length() is expected to return 0 to indicate that the unit length field |
| // can not be parsed and so we can not, for example, skip the current set |
| // to continue parsing from the next one. |
| EXPECT_EQ(Header.length(), 0u); |
| } |
| |
| TEST(DWARFListTableHeader, TruncatedHeader) { |
| static const char SecData[] = "\x02\x00\x00\x00" // Length |
| "\x05\x00"; // Version |
| DWARFDataExtractor Extractor(StringRef(SecData, sizeof(SecData) - 1), |
| /*isLittleEndian=*/true, |
| /*AddrSize=*/4); |
| DWARFListTableHeader Header(/*SectionName=*/".debug_rnglists", |
| /*ListTypeString=*/"range"); |
| uint64_t Offset = 0; |
| EXPECT_THAT_ERROR( |
| Header.extract(Extractor, &Offset), |
| FailedWithMessage(".debug_rnglists table at offset 0x0 has too small " |
| "length (0x6) to contain a complete header")); |
| // length() is expected to return the full length of the set if the unit |
| // length field is read, even if an error occurred during the parsing, |
| // to allow skipping the current set and continue parsing from the next one. |
| EXPECT_EQ(Header.length(), 6u); |
| } |
| |
| TEST(DWARFListTableHeader, OffsetEntryCount) { |
| static const char SecData[] = "\x10\x00\x00\x00" // Length |
| "\x05\x00" // Version |
| "\x08" // Address size |
| "\x00" // Segment selector size |
| "\x01\x00\x00\x00" // Offset entry count |
| "\x04\x00\x00\x00" // offset[0] |
| "\x04" // DW_RLE_offset_pair |
| "\x01" // ULEB128 starting offset |
| "\x02" // ULEB128 ending offset |
| "\x00"; // DW_RLE_end_of_list |
| DWARFDataExtractor Extractor(StringRef(SecData, sizeof(SecData) - 1), |
| /*isLittleEndian=*/true, |
| /*AddrSize=*/4); |
| DWARFListTableHeader Header(/*SectionName=*/".debug_rnglists", |
| /*ListTypeString=*/"range"); |
| uint64_t Offset = 0; |
| EXPECT_FALSE(!!Header.extract(Extractor, &Offset)); |
| Optional<uint64_t> Offset0 = Header.getOffsetEntry(Extractor, 0); |
| EXPECT_TRUE(!!Offset0); |
| EXPECT_EQ(Offset0, uint64_t(4)); |
| Optional<uint64_t> Offset1 = Header.getOffsetEntry(Extractor, 1); |
| EXPECT_FALSE(!!Offset1); |
| EXPECT_EQ(Header.length(), sizeof(SecData) - 1); |
| } |
| |
| } // end anonymous namespace |